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United States Patent | 5,656,053 |
Boaz | August 12, 1997 |
A method for heating and forming a glass sheet includes the steps of heating a glass sheet to at least a first predetermined temperature, applying microwave energy to the glass sheet to heat the glass sheet to at least a second predetermined temperature, cooling an outer surface of the glass sheet to at least a third predetermined temperature and forming the glass sheet using forming rollers to a predetermined configuration.
Inventors: | Boaz; Premakaran Tucker (Livonia, MI) |
Assignee: | Ford Motor Company (Dearborn, MI) |
Appl. No.: | 524495 |
Filed: | September 7, 1995 |
Current U.S. Class: | 65/106; 65/104; 65/111; 65/114; 219/678; 219/680 |
Intern'l Class: | C03B 023/02 |
Field of Search: | 65/102,104,106,107,111,114 219/678,680,764,773 264/432,489 432/1,11,9,18 |
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Foreign Patent Documents | |||
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Robert Gardon, "The Tempering of Flat Glass By Forced Convection", pp. 1-33. Robert Gardon, "Calculation of Temperature Distributions in Glass Plates Undergoing Heat-Treatment", Jun. 1958, pp. 200-209. |